text: """
  Copyright 2020 The OneFlow Authors. All rights reserved.
  
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
  
      http://www.apache.org/licenses/LICENSE-2.0
  
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  """
  from __future__ import absolute_import
  
  from typing import Optional
  
  import oneflow as flow
  import oneflow.python.framework.id_util as id_util
  import oneflow.python.framework.remote_blob as remote_blob_util
  from oneflow.python.oneflow_export import oneflow_export
  import oneflow_api
  
  
  @oneflow_export("eager_nccl_all_reduce")
  def eager_nccl_all_reduce(
      x: oneflow_api.BlobDesc, parallel_conf: str, name: Optional[str] = None
  ) -> oneflow_api.BlobDesc:
      return (
          flow.user_op_builder(
              name if name is not None else id_util.UniqueStr("EagerNcclAllReduce_")
          )
          .Op("eager_nccl_all_reduce")
          .Input("in", [x])
          .Output("out")
          .Attr("parallel_conf", parallel_conf)
          .Build()
          .InferAndTryRun()
          .RemoteBlobList()[0]
      )
  